Question

a scientist is investigating how the amount of available water affects plant growth in a rainforest. although all of earths spheres are interconnected, which of earths spheres does the scientists investigation focus on?
○ the geosphere and the hydrosphere
○ the hydrosphere and the biosphere
○ the biosphere and the geosphere
○ the geosphere and the atmosphere

Explanation:

To solve this, we analyze each Earth's sphere:

• Hydrosphere: includes all water (available water here).
• Biosphere: includes all living organisms (plants, part of biosphere).
• Geosphere: solid Earth (not focus here).
• Atmosphere: air (not focus here).

The investigation looks at water (hydrosphere) affecting plant growth (biosphere). So the correct option is the one with hydrosphere and biosphere.

Answer:

B. the hydrosphere and the biosphere